private synchronized void configurar() {
if (configured) {
// System.err.println("configurar: configured == true");
return;
}
// System.err.println("configurar: configured == false");
configured = true;
// Si existe un log4j.xml / log4j.properties usarlo, si no configurar en duro
Logger root = Logger.getRootLogger();
if (root.getAllAppenders().hasMoreElements()) {
System.out.println("PLoger.configurar: log4j.xml/log4j.properties");
} else {
// Configuracion desktop y autómatas
root.setLevel(Level.INFO);
Appender appender = null;
String iniciarEn = null;
if (System.getProperty("iniciarEn") != null) { // autómatas
if (new File(System.getProperty("iniciarEn")).exists()) {
iniciarEn = System.getProperty("iniciarEn");
} else {
System.out.println(
System.getProperty("iniciarEn")
+ " no existe, se va a utilizar el directorio corriente.");
}
try {
String pattern = System.getProperty("PLogger.pattern", "%-4r %d [%t] %-5p %c %x - %m%n");
String logFile = System.getProperty("PLogger.logFile", "automata.log");
DailyRollingFileAppender drfa =
new DailyRollingFileAppender(
new PatternLayout(pattern),
(iniciarEn == null ? "" : (iniciarEn + File.separator)) + logFile,
"'.'yyyy-MM-dd");
drfa.setAppend(true);
appender = drfa;
} catch (IOException e) {
e.printStackTrace();
}
} else { // desktops
appender = new ConsoleAppender();
}
if (appender != null) {
root.addAppender(appender);
}
}
}
private static Appender buildAppender(String name, String fileName, String pattern) {
DailyRollingFileAppender appender = new DailyRollingFileAppender();
appender.setName(name);
appender.setAppend(true);
appender.setEncoding("GBK");
appender.setLayout(new PatternLayout(pattern));
appender.setFile(new File(getLogPath(), fileName).getAbsolutePath());
appender.activateOptions(); // 很重要，否则原有日志内容会被清空
return appender;
}
public static Logger getLogger(String file) {
Logger log = logCache.get(file);
if (null != log) {
return log;
} else {
log = Logger.getLogger(file);
DailyRollingFileAppender appender = new DailyRollingFileAppender();
Layout layout = new PatternLayout();
appender.setFile(file);
appender.setEncoding("UTF-8");
appender.activateOptions();
appender.setDatePattern("'.'yyyy-MM-dd");
appender.setLayout(layout);
log.addAppender(appender);
logCache.put(file, log);
}
return log;
}